TY  - BOOK
AU  - Piaget Jean
AU  -  Inhelder Barbel
AU  -  Weaver Helen Tr.
TI  - Psychology of the child tr from french by Helen Weaver
U1  - S1, K93 
PY  - 1969///
CY  - New York
PB  - Basic Books USA    
KW  - PSYCHOLOGY
ER  -